“…contrast 4,15 and epidural anesthesia, 40 traumatic arachnoiditis, 17,22,25,38 arachnoiditis from subarachnoid hemorrhage, 3,23,39 congenital arachnoid malformations, 6,19,28,32,35 and traumatic 17,37,41 and idiopathic arachnoid cysts. 1,7,13,14,16,21,26,30,34,36,42 Treatment, including nonsurgical and surgical management strategies, has provided mixed results, and follow-up offered in the medical literature has been poor.…”